org.springframework.core.io
Class DefaultResourceLoader
- java.lang.Object
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- org.springframework.core.io.DefaultResourceLoader
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- All Implemented Interfaces:
- ResourceLoader
- Direct Known Subclasses:
- ClassRelativeResourceLoader, FileSystemResourceLoader
public class DefaultResourceLoader extends Object implements ResourceLoader
Default implementation of theResourceLoaderinterface. Used byResourceEditor, and serves as base class fororg.springframework.context.support.AbstractApplicationContext. Can also be used standalone.Will return a
UrlResourceif the location value is a URL, and aClassPathResourceif it is a non-URL path or a "classpath:" pseudo-URL.- Since:
- 10.03.2004
- Author:
- Juergen Hoeller
- See Also:
-
FileSystemResourceLoader,org.springframework.context.support.ClassPathXmlApplicationContext
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Field Summary
Fields inherited from interface org.springframework.core.io.ResourceLoader
CLASSPATH_URL_PREFIX
Constructor Summary
Constructors Constructor and Description DefaultResourceLoader()Create a new DefaultResourceLoader.DefaultResourceLoader(ClassLoader classLoader)Create a new DefaultResourceLoader.
Method Summary
Methods Modifier and Type Method and Description ClassLoadergetClassLoader()Return the ClassLoader to load class path resources with.ResourcegetResource(String location)Return a Resource handle for the specified resource.protected ResourcegetResourceByPath(String path)Return a Resource handle for the resource at the given path.voidsetClassLoader(ClassLoader classLoader)Specify the ClassLoader to load class path resources with, ornullfor using the thread context class loader at the time of actual resource access.
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Constructor Detail
DefaultResourceLoader
public DefaultResourceLoader()
Create a new DefaultResourceLoader.ClassLoader access will happen using the thread context class loader at the time of this ResourceLoader's initialization.
- See Also:
-
Thread.getContextClassLoader()
DefaultResourceLoader
public DefaultResourceLoader(ClassLoader classLoader)
Create a new DefaultResourceLoader.- Parameters:
-
classLoader- the ClassLoader to load class path resources with, ornullfor using the thread context class loader at the time of actual resource access
Method Detail
setClassLoader
public void setClassLoader(ClassLoader classLoader)
Specify the ClassLoader to load class path resources with, ornullfor using the thread context class loader at the time of actual resource access.The default is that ClassLoader access will happen using the thread context class loader at the time of this ResourceLoader's initialization.
getClassLoader
public ClassLoader getClassLoader()
Return the ClassLoader to load class path resources with.Will get passed to ClassPathResource's constructor for all ClassPathResource objects created by this resource loader.
- Specified by:
-
getClassLoaderin interfaceResourceLoader - Returns:
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the ClassLoader (only
nullif even the system ClassLoader isn't accessible) - See Also:
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ClassPathResource
getResource
public Resource getResource(String location)
Description copied from interface:ResourceLoaderReturn a Resource handle for the specified resource. The handle should always be a reusable resource descriptor, allowing for multipleInputStreamSource.getInputStream()calls.- Must support fully qualified URLs, e.g. "file:C:/test.dat".
- Must support classpath pseudo-URLs, e.g. "classpath:test.dat".
- Should support relative file paths, e.g. "WEB-INF/test.dat". (This will be implementation-specific, typically provided by an ApplicationContext implementation.)
Note that a Resource handle does not imply an existing resource; you need to invoke
Resource.exists()to check for existence.- Specified by:
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getResourcein interfaceResourceLoader - Parameters:
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location- the resource location - Returns:
- a corresponding Resource handle
- See Also:
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ResourceLoader.CLASSPATH_URL_PREFIX,Resource.exists(),InputStreamSource.getInputStream()
getResourceByPath
protected Resource getResourceByPath(String path)
Return a Resource handle for the resource at the given path.The default implementation supports class path locations. This should be appropriate for standalone implementations but can be overridden, e.g. for implementations targeted at a Servlet container.
- Parameters:
-
path- the path to the resource - Returns:
- the corresponding Resource handle
- See Also:
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ClassPathResource,org.springframework.context.support.FileSystemXmlApplicationContext#getResourceByPath,org.springframework.web.context.support.XmlWebApplicationContext#getResourceByPath